Photochemical carbosilylation of Lu₃N@Ih-C80 was performed using siliranes (silacyclopropanes) to afford the corresponding [5,6]- and [6,6]-adducts. Electrochemical studies indicated that the redox potentials of the carbosilylated derivatives were shifted cathodically in comparison with those of the [5,6]-pyrrolidino adducts. The electronic effect of the silirane addends on Lu₃N@Ih-C80 was verified on the basis of density functional theory calculations.
Keywords: Lu3N@Ih-C80; carbosilylation; endohedral metallofullerene; redox property; silirane.